Special shaped wire



Feb. 12, 1957 A. E. BRICKMAN SPECIAL SHAPED WIRE Filed Jan. 50, 1953 SPECIAL SHAPED WIRE Alan E. Brickman, Amherst Township, Erie County, N. Y., assignor to United States Steel Corporation, a corporation of New Jersey Application January 30, 1953, Serial No. 334,333

2 Claims (Cl. 29-1935) This invention relates to a special shaped wire or rod and is a continuation-in-part of my copending application, Serial No. 61,875, filed November 24, 1948, now Patent No. 2,633,211. While the wire may be used on the running board disclosed in the above mentioned application it is not necessarily limited to such use, but may be used for other purposes, especially where anti-skid properties are desired.

It is therefore an object of my invention to provide a rod or wire having pimples formed thereon.

This and other objects will be more apparent after referring to the following specification and attached drawings, in which:

Figure 1 is a detailed view of the rod;

Figure 2 is a sectional view taken on the line IIH of Figure 1;

Figure 3 is a view, partly in section, showing the rolls for putting the pimples in the rod; and

Figure 4 is a sectional view taken transversely through the rolls of Figure 3.

Referring more particularly to the drawings, the reference numeral 2 indicates the wire or rod of my invention. The top of the rod 2 is provided with spaced apart pinched ears or pimples 4. As shown in Figures 1 and 2, these pimples are preferably provided with an arcuate portion 6 extending above the top of the wire. In transverse section the pimples 4 are rectangular in shape and have a portion extending below the top of the wire.

As shown in Figures 3 and 4, the pimples 4 are formed by passing the wire through a pair of rotating rolls 8 mounted on parallel shafts 10. A plurality of spaced apart radial holes 12 are provided in the rolls 8 in which are placed pins 14 which bear against the shaft 10. Each of the rolls 8 has a groove 16 around its periphery into which extends .a portion of the outer ends of the pins 14. As the rod passes through the grooves 16 it is held from rotation and the mating pins 14 pinch the top portion of the wire forcing the metal thereof inwardly and upwardly to form the pimples 4. In addition to providing efiicient anti-skid properties to the wire, these pimples increase the strength of the wire since the metal is more efliciently distributed. In some instances it may be desirable to space the pimples helically around the periphery of the wire. To do so the wire 2 or rolls 8 are rotated about the axis of the wire as it is fed through the rolls.

The wire is particularly adapted for use in any structure where anti-skid properties are desired but it will be understood that the wire need not be used solely for such purpose.

While one embodiment of my invention has been shown and described it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

1. In an anti-skid device, a surfacing member comprising a Wire having a plurality of spaced apart pinched ears integral therewith and all extending therefrom in substantially the same upward direction, each ear having an arcuate portion extending from the surface of the wire and a portion extending below the surfaces of the bar adjacent thereto, the remaining cross-section of the wire at the ears being of the same shape as the portions of the wire adjacent thereto.

2. In an anti-skid supporting member according to claim 1 said pinched ears having a substantially rectangular cross-section.

References Cited in the file of this patent UNITED STATES PATENTS 579,375 Balph Mar. 23, 1897 1,749,384 Koerber Mar. 4, 1930 1,769,263 Johnson July 1, 1930 2,002,358 Smith May 21, 1935 2,580,330 Syrnous Dec. 25, 1951 FOREIGN PATENTS 752,624 France Sept. 27, 1933 45,857 France Dec. 27, 1935 (Addition to No. 752,624) 224,384 Switzerland July 16, 1943 

